Dump-car.



No. 706,662. Patented Aug. l2, |902.

`F. s. mGoLnsBY. DUMP CAR.

-Applicaton filed Dee- 134, 1900.)

(No Model.)

UNITED STATES PATENT FFICE.

- FRANKV S; INGOLDSBY, 'OF ST'LOUIS, `MISSOURL DUMP-CAR.

SPECIFICATION forming part or Letters Patent No. 706,662, dated August 12, 1902.

Application and December 1s, 1900. sel-MNO.' 39,664. (No model.)

T0 all whom it may concern:

Be it known that I, FRANK S. INGoLDsBY, a citizen of theUnited States, residing at Str Louis, in the State of Missouri, have inventedV a certain new and useful Improvement in Dumpars, (Oase A,) of which the following is a full, clear, and exact description, reference being had to the accompanying draw- Ings.

My inventionrelates to dump-cars, comprising dumping railway cars, wagons, or other vehicles, of the general type shown in my prior United States patents, Nos. 551,319, 613,279, 632,650, granted, respectively, December 10, 1895, November 1, 1898, September 5, 1899. In these patents there appears a dumping vehicle having sides and a central longitudinal beam and dumping-doors hinged to the beam and engaging at their edges with the sides and adapted to swing downward to dump the load, and in order to make a tight joint there exists at each edge of the door an outward bevel, and corresponding bevels are formed on the coperating parts, and means are provided for drawing the doors snugly into place.

Now the above-mentioned construction I have found from practice works admirably; but it has two occasional disadvantages,which it is the object of the present invention to overcome. These disadvantages are, first, that in use the car-floor'f notthoroughly seasoned may shrink away from the edge of the car, so that the bevel edge will not fit tightly,wherefore if the load carried is of a ne character a material part of it may leak out through such crack. To overcomethat difculty, I have heretofore when the crack occurred simply secured to the edge ofthe iioorV an additional filling-strip. I have discovered, however,.thatby rabbeting the edge of the floor, so that it will Aextend horizontally for some distance beneath the cooperating part' of the car, such filling-strip is rendered unnecessary, as when the door shrinks though the bevel may not contact the horizontal rabbet will, wherefore Whatever material starts to leak through the crack will simply lodge on the ledge provided by the horizontal portion. This is one .feature of the present invention. The other difficulty which I have found sometimes attends my dumping-vehicles as heretofore constructed isthat when the du mping-floor is lowered only part way to discharge the load Yto the outside of the track instead of vertically downward and the material is of a sticky 4character some of it sometimes is lodged in'the groove comprised between the bevel at the lower edge of the central beam and the bevel at the inner edge of the door and has toLbe scraped out before the door can be closed.`

The present invention obviates the last- `mentioned diliiculty by making a curve at the edge of the central beam instead of a straight bevel and pivoting the door at the center of this curve, the door carrying a cooperating curve substantially contacting with the curve carried by the central beam, so that whatever' the position of the door substantially a snug contact is maintained between it and the central beam. In accomplishing this I place the pivot of the door substantially at the lower corner of a triangular-shaped central beam. This has in itself an advantage over my prior Vmethod of pivoting the door below the'edge of the beam, for by raising this pivot a wider door maybe used without' raising the car. As one of the limiting factors in the construction of eiilcient dump-cars is the requirement that the center of gravity be kept low and as Vthe door in order to swing to a vertical position cannotbe Widerthan the distance of its pivot above the road-bed, it will be seen that by raising the location of the pivot of the door without raising the center of the gravity of the car the door may be made wider, and hence the capacity of the car increased.

These features of the location of the pivot and the continuously-engaging edges of the car-doors and central beam are also important parts jot'V the present invention.

In the drawings, `Figure 1 is a` side elevation' of a dump-car, various parts not contributing to the present invention being removed. Fig. 2 is an enlarged vertical transverse section thereof. Fig. 3 is a still more enlarged transverse section of the hinge of the dumping-door. Fig. 4 is a plan of the dumpingdoor, being on the same scale as Fig. 2.

ICO

Referring to the parts by letters, A repre- I ner if the flooring should shrink: Thus with sents the side of the vehicle, B the longitudil the improvements shown herein the doors nal central beam, and C the trap-doorshinged thereto. Each of the three free edges of these trap-doors are preferably beveled, as at c', to make the tightest possible joint when the doors fit snugly; but this bevel is interrupted by the offset or rabbet c2. The purpose of this rabbet is to provide a horizontal surface Now the door'being d-rawn'up against the car a tight jointis made at these coperating horizontal surfaces, and even it' the bevels do shrink away no material can leak, for what starts to pass between the floor and car is interrupted by the horizontal rabbet.

The door is drawn snugly into place by the hooks D, carriedby the side of the car and engaging with projecting straps E, secured to the under side of the doors, the ends of the hooks being beveled-to draw the door snugly against the car. As shown, the hooks are conf veniently operated by the lever F, connected therewith by a link G.

At their inner ends e the door-straps E turn upward, coming at the rear end of the oorin g of the door, and secured to the under side of has its ends h correspondingly turned upward,

` and joining these upturned ends substantially at the theoretical corner of the central beam are hingepintles J. The beam and iloor are of course so formed as to accommodate this position of the hinge members, and

in additionthe central beam is curved concavely on a'center coincident with that of the hinge-pintles, as shown at b, and a convex surface c8 is carried by the ioor above the `hinge-'pintles and substantially engaging with the concave surface.

-In the form shown in the drawings, where the floor is composed of planking, the convex isurface referred to is a shield c4, bolted or screwed to the wooden planking and extending across the hinge-joint in a curve concentric with the curve b and of' sufficient length so as to substantially engage with that concave curve Whatever the rposition of the door.

\ Now when the door is in locked position, as

shown in Fig. 2 andas shown in dotted lines in Fig. 3, nol material can escape at the central beam, for the joint is tight, while when the door is dropped to release the load-say to a -iforty-five-degree position, as shown in Fig. 3-

will close tightly, preventing the load from leakage at any point, even though the ioor should shrink in practice, and without requiring any additional filling-strips, while when the load is dumped it is provided with a substantially continuous surface on which it may slide out of the car and there is no groove or l ledge on which it may lodge.

Havingdescribed my invention, I claim- 1. In a dump-car, in combination, a dumping-door which swings downward, and a car side with which said door is adapted to substantially engage, the coperating edges of said door and side being beveled and rabbeted, and means for forcing thedoor and side snugly together whereby the bevels may normally engage forming a tight joint and if the door shrinks the horizontal face of the rabbet may still engage preventing leakage, substantially as described.

2`. In a dump-car, in combination, a beam having a recess at its lower edge, a dumpingdoor pivoted to said beam by hinges which occupy said recess, and a shield carried bythe door and adapted to extend into the recess over the hinge in various positions of the door, substantially as described.

3. In a dump-car, the combination of a beam having a downwardly-sloping upper` surface, said beam being recessed along its lower edge, a dumping-door pivoted to said beam substantially within such recess, and a metal shield carried by said door and extending over the hinges, said shield curving over the hinged pivot when the door is dumped and operating to. substantially close the entrance to such recess in Various positions of the door, substantially as described.

4. In a dump-car, in combination, a beam downwardly sloping in opposite directions on its upper surface, the lower edges of said beam being recessed, a strap extending across the under side of said beam and provided at its ends with hinge-eyes substantially at said recesses, a pair of dumping-doors having straps on their under surface, hinge-pintles connecting the beam-straps with the doorstraps, and shields carried by the doors and IOO ilo

extending over the hinges into said recess,

hinged to said bearn on pivots substantially beam and the ends of the hinge members seconcentric with such curve, the hinge me1ncured to the door, substantially as described. ro bers being spaced along the under` sides of the In testimony whereof I hereunto ax my beam and door and secured respectively theresignature in the presence of two Witnesses.

to, and a shield carried by the upper surface FRANK S. INGOLDSBY. of the dooi` and extending along the inner V'Vitnesses: edge thereof and curved over the hinge-pin- ALBERT H. BATES,

tles and confined between the curve of the II. M. VISE. 

